The player's performance in the multiplayer mode is tracked with experience points, earned by taking down other players, completing objectives, or by being a member of a winning team. As the player gains experience, they advance in level, unlocking new weapons, perks, challenges, and gameplay modes. The highest obtainable level is 55, but on the console versions of the game, the player has the option to play "Prestige" mode; this resets their level back to 1 and all earned bonuses are lost in exchange for a special in-game insignia. This process can be repeated up to 10 times with a different insignia being given each time, giving the player a total of 605 levels to achieve. Leaderboard statistics, including kills, deaths, and playing time, are not affected by Prestige mode.